Heating system



R. N. MURPHY.

HEATING SYSTEM.

APPLIGATION FILED FEB. 17. 1919.

Patented Mar. 14, 1922.

UNITED STATES PATENT OFFICE.

HEATING SYSTEM.

Application filed February 17, 1919.

To all 707mm it v/zay/ concern:

Be it known that l, ROBERI? Niciionas IilURrHY, a subject of the King of Great Britain. and resident of the city of flttawa. in the Province of Ontario, Dominion of Canada, have invented certain new and use ful Improvements in Heating Systems, of which the following is a specification,

This invention relates to improvements in heating systems, and the general object of the invention is to obtain greater efficiency in the conversion of combustible fuel into heat, and in the distribution of the latter. The invention be applied in a great variety of forms, one of the principal features common to all forms is the embedding of means, through which the heat distributin g fluids are circulated, in the fuel bed.

Further objects are to permit of various kinds of fuel, such as soft or hard coal, lignite. garbage, wood, oil and the like being used, and to permit of several sections of the heater being readily accessible for removal and repair.

Further objects still are to transmit a {Ireater degree of heat to the smallest volume of circulating fluid, by placing he circulating means in direct contact with the burning fuel. and generally to adapt the several parts to better perform the functions required of them.

lVith the above and other objects in view the invention consists essentially of the improved construction hereinafter described and set forth in the following specification and accompanying drawings forming part of tie same.

In the drawings:

Figure 1 is a sectional elevation of a water heater embodying my invention.

Figure 2 is a fragmentary sectional elevation of part of the fluid circulating element.

Figure 3 is a transverse section through the upper portion or header of the fluid circulating element.

Like characters of reference refer to like parts in the several figures.

Referring now to the drawing the fluid circulating element comprises a header 28 formed with a baflie wall 29 therein, which divides the header into two chambers 30 and 31, with the former of which the inlet water pipe 32 communicates, and with the latter the outlet water pipe 3 The lower end of the header is provided with. a plurality of orifices 34: in which the Specification of Letters Patent.

Patented Mar. 14, 1922.

Serial No. 277,565.

upper open end of tubes 35 extend, and these i ii are designed to project downwardly into he hiel in the heater.

Each of the tubes 35 is provided with a balllc wall 36 having an orifice 37 adjacent to the lower end, thereby forming a U-shaped passageway through which the fluid circulates.

The upper end of the baffle wall 36 engages with the lateral wall of the baflie 29 in the header. The header 28 is formed annular, with a concentric orifice provided with a damper 38 which isoperable extornally of the. heater by means of the spindle 29.

ii. combustion chamber 10 is formed between the outer periphery of the tubes and the inner wall of the body portion 10, and into this combustion chamber a downwardly extending pipe 4C1 extends to supply pre-heate-d air to the fuel on the grate.

When the type of my invention particularly illustrated in the drawing is in use the damper 38 is opened and fuel fed through th doorway 13 and down through the cen tral )assageway of the header 28 and between the tubes 35, so that the fuel will form conical heap on the grate and build up around the lower portion of the tubes.

The damper 38 is then closed and the products of combustion pass through between the tubes 35 into the combustion chamber 40, where the gases intermix with the pike-heated air delivered through the pipe 41, so that an after burning of these gases takes place, completing the combustion of the same, and the products of combustion after travelling around the outer wall of the header 28 are ultimately discharged through the smoke stack 14.

In this case also the doorways 15 may be opened to supply further air to the fire, if such is necessary, and the pipe 11 may be duplicated if a larger supply of hot air is necessary for the well working of the heater.

As many changes could be made in the above construction, and many apparently widely different embodiments of my invention, within the scope of the claim, constructed without departing from the spirit or scope thereof, it is intended that all matter contained in the accompanying specification and drawings, shall be interpreted as illustrative and not in a limiting sense.

What I claim as my invention is:

In a heater, a fluid circulating element comprising an annular header, having a central feed, tubes depending from the header,

I a bafile wall in each tube having an orifice int the lower end forming the tube into a U- shapedpassageway, the upper end of the baffle wall extending into the header, a baflie wall in the header subdividing it into two consecutive compartments and abutting the projecting portions of each of the said bafile walls, the lower edge of the last said bafile extending diametrically across the upper ends of all the tubes, an inlet pipe extending through the header and last said baffle wall 

